1ea8dc4b6Seschrock /* 2ea8dc4b6Seschrock * CDDL HEADER START 3ea8dc4b6Seschrock * 4ea8dc4b6Seschrock * The contents of this file are subject to the terms of the 5ea8dc4b6Seschrock * Common Development and Distribution License (the "License"). 6ea8dc4b6Seschrock * You may not use this file except in compliance with the License. 7ea8dc4b6Seschrock * 8ea8dc4b6Seschrock * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9ea8dc4b6Seschrock * or http://www.opensolaris.org/os/licensing. 10ea8dc4b6Seschrock * See the License for the specific language governing permissions 11ea8dc4b6Seschrock * and limitations under the License. 12ea8dc4b6Seschrock * 13ea8dc4b6Seschrock * When distributing Covered Code, include this CDDL HEADER in each 14ea8dc4b6Seschrock * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15ea8dc4b6Seschrock * If applicable, add the following below this CDDL HEADER, with the 16ea8dc4b6Seschrock * fields enclosed by brackets "[]" replaced with your own identifying 17ea8dc4b6Seschrock * information: Portions Copyright [yyyy] [name of copyright owner] 18ea8dc4b6Seschrock * 19ea8dc4b6Seschrock * CDDL HEADER END 20ea8dc4b6Seschrock */ 21ea8dc4b6Seschrock /* 2214843421SMatthew Ahrens * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23ea8dc4b6Seschrock * Use is subject to license terms. 24ea8dc4b6Seschrock */ 25ea8dc4b6Seschrock 26ea8dc4b6Seschrock /* 27ea8dc4b6Seschrock * Routines to manage the on-disk persistent error log. 28ea8dc4b6Seschrock * 29ea8dc4b6Seschrock * Each pool stores a log of all logical data errors seen during normal 30ea8dc4b6Seschrock * operation. This is actually the union of two distinct logs: the last log, 31ea8dc4b6Seschrock * and the current log. All errors seen are logged to the current log. When a 32ea8dc4b6Seschrock * scrub completes, the current log becomes the last log, the last log is thrown 33ea8dc4b6Seschrock * out, and the current log is reinitialized. This way, if an error is somehow 34ea8dc4b6Seschrock * corrected, a new scrub will show that that it no longer exists, and will be 35ea8dc4b6Seschrock * deleted from the log when the scrub completes. 36ea8dc4b6Seschrock * 37ea8dc4b6Seschrock * The log is stored using a ZAP object whose key is a string form of the 38ea8dc4b6Seschrock * zbookmark tuple (objset, object, level, blkid), and whose contents is an 39ea8dc4b6Seschrock * optional 'objset:object' human-readable string describing the data. When an 40ea8dc4b6Seschrock * error is first logged, this string will be empty, indicating that no name is 41ea8dc4b6Seschrock * known. This prevents us from having to issue a potentially large amount of 42ea8dc4b6Seschrock * I/O to discover the object name during an error path. Instead, we do the 43ea8dc4b6Seschrock * calculation when the data is requested, storing the result so future queries 44ea8dc4b6Seschrock * will be faster. 45ea8dc4b6Seschrock * 46ea8dc4b6Seschrock * This log is then shipped into an nvlist where the key is the dataset name and 47ea8dc4b6Seschrock * the value is the object name. Userland is then responsible for uniquifying 48ea8dc4b6Seschrock * this list and displaying it to the user. 49ea8dc4b6Seschrock */ 50ea8dc4b6Seschrock 51ea8dc4b6Seschrock #include <sys/dmu_tx.h> 52ea8dc4b6Seschrock #include <sys/spa.h> 53ea8dc4b6Seschrock #include <sys/spa_impl.h> 54ea8dc4b6Seschrock #include <sys/zap.h> 55ea8dc4b6Seschrock #include <sys/zio.h> 56ea8dc4b6Seschrock 57ea8dc4b6Seschrock /* 58ea8dc4b6Seschrock * This is a stripped-down version of strtoull, suitable only for converting 59ea8dc4b6Seschrock * lowercase hexidecimal numbers that don't overflow. 60ea8dc4b6Seschrock */ 6114843421SMatthew Ahrens uint64_t 6214843421SMatthew Ahrens strtonum(const char *str, char **nptr) 63ea8dc4b6Seschrock { 64ea8dc4b6Seschrock uint64_t val = 0; 65ea8dc4b6Seschrock char c; 66ea8dc4b6Seschrock int digit; 67ea8dc4b6Seschrock 68ea8dc4b6Seschrock while ((c = *str) != '\0') { 69ea8dc4b6Seschrock if (c >= '0' && c <= '9') 70ea8dc4b6Seschrock digit = c - '0'; 71ea8dc4b6Seschrock else if (c >= 'a' && c <= 'f') 72ea8dc4b6Seschrock digit = 10 + c - 'a'; 73ea8dc4b6Seschrock else 74ea8dc4b6Seschrock break; 75ea8dc4b6Seschrock 76ea8dc4b6Seschrock val *= 16; 77ea8dc4b6Seschrock val += digit; 78ea8dc4b6Seschrock 79ea8dc4b6Seschrock str++; 80ea8dc4b6Seschrock } 81ea8dc4b6Seschrock 8214843421SMatthew Ahrens if (nptr) 8314843421SMatthew Ahrens *nptr = (char *)str; 84ea8dc4b6Seschrock 85ea8dc4b6Seschrock return (val); 86ea8dc4b6Seschrock } 87ea8dc4b6Seschrock 88ea8dc4b6Seschrock /* 89ea8dc4b6Seschrock * Convert a bookmark to a string. 90ea8dc4b6Seschrock */ 91ea8dc4b6Seschrock static void 92ea8dc4b6Seschrock bookmark_to_name(zbookmark_t *zb, char *buf, size_t len) 93ea8dc4b6Seschrock { 94ea8dc4b6Seschrock (void) snprintf(buf, len, "%llx:%llx:%llx:%llx", 95ea8dc4b6Seschrock (u_longlong_t)zb->zb_objset, (u_longlong_t)zb->zb_object, 96ea8dc4b6Seschrock (u_longlong_t)zb->zb_level, (u_longlong_t)zb->zb_blkid); 97ea8dc4b6Seschrock } 98ea8dc4b6Seschrock 99ea8dc4b6Seschrock /* 100ea8dc4b6Seschrock * Convert a string to a bookmark 101ea8dc4b6Seschrock */ 1025ad82045Snd #ifdef _KERNEL 103ea8dc4b6Seschrock static void 104ea8dc4b6Seschrock name_to_bookmark(char *buf, zbookmark_t *zb) 105ea8dc4b6Seschrock { 106ea8dc4b6Seschrock zb->zb_objset = strtonum(buf, &buf); 107ea8dc4b6Seschrock ASSERT(*buf == ':'); 108ea8dc4b6Seschrock zb->zb_object = strtonum(buf + 1, &buf); 109ea8dc4b6Seschrock ASSERT(*buf == ':'); 110ea8dc4b6Seschrock zb->zb_level = (int)strtonum(buf + 1, &buf); 111ea8dc4b6Seschrock ASSERT(*buf == ':'); 112ea8dc4b6Seschrock zb->zb_blkid = strtonum(buf + 1, &buf); 113ea8dc4b6Seschrock ASSERT(*buf == '\0'); 114ea8dc4b6Seschrock } 1155ad82045Snd #endif 116ea8dc4b6Seschrock 117ea8dc4b6Seschrock /* 118ea8dc4b6Seschrock * Log an uncorrectable error to the persistent error log. We add it to the 119ea8dc4b6Seschrock * spa's list of pending errors. The changes are actually synced out to disk 120ea8dc4b6Seschrock * during spa_errlog_sync(). 121ea8dc4b6Seschrock */ 122ea8dc4b6Seschrock void 123ea8dc4b6Seschrock spa_log_error(spa_t *spa, zio_t *zio) 124ea8dc4b6Seschrock { 125ea8dc4b6Seschrock zbookmark_t *zb = &zio->io_logical->io_bookmark; 126ea8dc4b6Seschrock spa_error_entry_t search; 127ea8dc4b6Seschrock spa_error_entry_t *new; 128ea8dc4b6Seschrock avl_tree_t *tree; 129ea8dc4b6Seschrock avl_index_t where; 130ea8dc4b6Seschrock 131ea8dc4b6Seschrock /* 132ea8dc4b6Seschrock * If we are trying to import a pool, ignore any errors, as we won't be 133ea8dc4b6Seschrock * writing to the pool any time soon. 134ea8dc4b6Seschrock */ 135*b16da2e2SGeorge Wilson if (spa_load_state(spa) == SPA_LOAD_TRYIMPORT) 136ea8dc4b6Seschrock return; 137ea8dc4b6Seschrock 138ea8dc4b6Seschrock mutex_enter(&spa->spa_errlist_lock); 139ea8dc4b6Seschrock 140ea8dc4b6Seschrock /* 141ea8dc4b6Seschrock * If we have had a request to rotate the log, log it to the next list 142ea8dc4b6Seschrock * instead of the current one. 143ea8dc4b6Seschrock */ 144ea8dc4b6Seschrock if (spa->spa_scrub_active || spa->spa_scrub_finished) 145ea8dc4b6Seschrock tree = &spa->spa_errlist_scrub; 146ea8dc4b6Seschrock else 147ea8dc4b6Seschrock tree = &spa->spa_errlist_last; 148ea8dc4b6Seschrock 149ea8dc4b6Seschrock search.se_bookmark = *zb; 150ea8dc4b6Seschrock if (avl_find(tree, &search, &where) != NULL) { 151ea8dc4b6Seschrock mutex_exit(&spa->spa_errlist_lock); 152ea8dc4b6Seschrock return; 153ea8dc4b6Seschrock } 154ea8dc4b6Seschrock 155ea8dc4b6Seschrock new = kmem_zalloc(sizeof (spa_error_entry_t), KM_SLEEP); 156ea8dc4b6Seschrock new->se_bookmark = *zb; 157ea8dc4b6Seschrock avl_insert(tree, new, where); 158ea8dc4b6Seschrock 159ea8dc4b6Seschrock mutex_exit(&spa->spa_errlist_lock); 160ea8dc4b6Seschrock } 161ea8dc4b6Seschrock 162ea8dc4b6Seschrock /* 163ea8dc4b6Seschrock * Return the number of errors currently in the error log. This is actually the 164ea8dc4b6Seschrock * sum of both the last log and the current log, since we don't know the union 165ea8dc4b6Seschrock * of these logs until we reach userland. 166ea8dc4b6Seschrock */ 167ea8dc4b6Seschrock uint64_t 168ea8dc4b6Seschrock spa_get_errlog_size(spa_t *spa) 169ea8dc4b6Seschrock { 170ea8dc4b6Seschrock uint64_t total = 0, count; 171ea8dc4b6Seschrock 172ea8dc4b6Seschrock mutex_enter(&spa->spa_errlog_lock); 173ea8dc4b6Seschrock if (spa->spa_errlog_scrub != 0 && 174ea8dc4b6Seschrock zap_count(spa->spa_meta_objset, spa->spa_errlog_scrub, 175ea8dc4b6Seschrock &count) == 0) 176ea8dc4b6Seschrock total += count; 177ea8dc4b6Seschrock 178ea8dc4b6Seschrock if (spa->spa_errlog_last != 0 && !spa->spa_scrub_finished && 179ea8dc4b6Seschrock zap_count(spa->spa_meta_objset, spa->spa_errlog_last, 180ea8dc4b6Seschrock &count) == 0) 181ea8dc4b6Seschrock total += count; 182ea8dc4b6Seschrock mutex_exit(&spa->spa_errlog_lock); 183ea8dc4b6Seschrock 184ea8dc4b6Seschrock mutex_enter(&spa->spa_errlist_lock); 185ea8dc4b6Seschrock total += avl_numnodes(&spa->spa_errlist_last); 186ea8dc4b6Seschrock total += avl_numnodes(&spa->spa_errlist_scrub); 187ea8dc4b6Seschrock mutex_exit(&spa->spa_errlist_lock); 188ea8dc4b6Seschrock 189ea8dc4b6Seschrock return (total); 190ea8dc4b6Seschrock } 191ea8dc4b6Seschrock 192ea8dc4b6Seschrock #ifdef _KERNEL 193ea8dc4b6Seschrock static int 194ea8dc4b6Seschrock process_error_log(spa_t *spa, uint64_t obj, void *addr, size_t *count) 195ea8dc4b6Seschrock { 196ea8dc4b6Seschrock zap_cursor_t zc; 197ea8dc4b6Seschrock zap_attribute_t za; 198ea8dc4b6Seschrock zbookmark_t zb; 199ea8dc4b6Seschrock 200ea8dc4b6Seschrock if (obj == 0) 201ea8dc4b6Seschrock return (0); 202ea8dc4b6Seschrock 203ea8dc4b6Seschrock for (zap_cursor_init(&zc, spa->spa_meta_objset, obj); 204ea8dc4b6Seschrock zap_cursor_retrieve(&zc, &za) == 0; 205ea8dc4b6Seschrock zap_cursor_advance(&zc)) { 206ea8dc4b6Seschrock 207ea8dc4b6Seschrock if (*count == 0) { 208ea8dc4b6Seschrock zap_cursor_fini(&zc); 209ea8dc4b6Seschrock return (ENOMEM); 210ea8dc4b6Seschrock } 211ea8dc4b6Seschrock 212ea8dc4b6Seschrock name_to_bookmark(za.za_name, &zb); 213ea8dc4b6Seschrock 214ea8dc4b6Seschrock if (copyout(&zb, (char *)addr + 215ea8dc4b6Seschrock (*count - 1) * sizeof (zbookmark_t), 216ea8dc4b6Seschrock sizeof (zbookmark_t)) != 0) 217ea8dc4b6Seschrock return (EFAULT); 218ea8dc4b6Seschrock 219ea8dc4b6Seschrock *count -= 1; 220ea8dc4b6Seschrock } 221ea8dc4b6Seschrock 222ea8dc4b6Seschrock zap_cursor_fini(&zc); 223ea8dc4b6Seschrock 224ea8dc4b6Seschrock return (0); 225ea8dc4b6Seschrock } 226ea8dc4b6Seschrock 227ea8dc4b6Seschrock static int 228ea8dc4b6Seschrock process_error_list(avl_tree_t *list, void *addr, size_t *count) 229ea8dc4b6Seschrock { 230ea8dc4b6Seschrock spa_error_entry_t *se; 231ea8dc4b6Seschrock 232ea8dc4b6Seschrock for (se = avl_first(list); se != NULL; se = AVL_NEXT(list, se)) { 233ea8dc4b6Seschrock 234ea8dc4b6Seschrock if (*count == 0) 235ea8dc4b6Seschrock return (ENOMEM); 236ea8dc4b6Seschrock 237ea8dc4b6Seschrock if (copyout(&se->se_bookmark, (char *)addr + 238ea8dc4b6Seschrock (*count - 1) * sizeof (zbookmark_t), 239ea8dc4b6Seschrock sizeof (zbookmark_t)) != 0) 240ea8dc4b6Seschrock return (EFAULT); 241ea8dc4b6Seschrock 242ea8dc4b6Seschrock *count -= 1; 243ea8dc4b6Seschrock } 244ea8dc4b6Seschrock 245ea8dc4b6Seschrock return (0); 246ea8dc4b6Seschrock } 247ea8dc4b6Seschrock #endif 248ea8dc4b6Seschrock 249ea8dc4b6Seschrock /* 250ea8dc4b6Seschrock * Copy all known errors to userland as an array of bookmarks. This is 251ea8dc4b6Seschrock * actually a union of the on-disk last log and current log, as well as any 252ea8dc4b6Seschrock * pending error requests. 253ea8dc4b6Seschrock * 254ea8dc4b6Seschrock * Because the act of reading the on-disk log could cause errors to be 255ea8dc4b6Seschrock * generated, we have two separate locks: one for the error log and one for the 256ea8dc4b6Seschrock * in-core error lists. We only need the error list lock to log and error, so 257ea8dc4b6Seschrock * we grab the error log lock while we read the on-disk logs, and only pick up 258ea8dc4b6Seschrock * the error list lock when we are finished. 259ea8dc4b6Seschrock */ 260ea8dc4b6Seschrock int 261ea8dc4b6Seschrock spa_get_errlog(spa_t *spa, void *uaddr, size_t *count) 262ea8dc4b6Seschrock { 263ea8dc4b6Seschrock int ret = 0; 264ea8dc4b6Seschrock 265ea8dc4b6Seschrock #ifdef _KERNEL 266ea8dc4b6Seschrock mutex_enter(&spa->spa_errlog_lock); 267ea8dc4b6Seschrock 268ea8dc4b6Seschrock ret = process_error_log(spa, spa->spa_errlog_scrub, uaddr, count); 269ea8dc4b6Seschrock 270ea8dc4b6Seschrock if (!ret && !spa->spa_scrub_finished) 271ea8dc4b6Seschrock ret = process_error_log(spa, spa->spa_errlog_last, uaddr, 272ea8dc4b6Seschrock count); 273ea8dc4b6Seschrock 274ea8dc4b6Seschrock mutex_enter(&spa->spa_errlist_lock); 275ea8dc4b6Seschrock if (!ret) 276ea8dc4b6Seschrock ret = process_error_list(&spa->spa_errlist_scrub, uaddr, 277ea8dc4b6Seschrock count); 278ea8dc4b6Seschrock if (!ret) 279ea8dc4b6Seschrock ret = process_error_list(&spa->spa_errlist_last, uaddr, 280ea8dc4b6Seschrock count); 281ea8dc4b6Seschrock mutex_exit(&spa->spa_errlist_lock); 282ea8dc4b6Seschrock 283ea8dc4b6Seschrock mutex_exit(&spa->spa_errlog_lock); 284ea8dc4b6Seschrock #endif 285ea8dc4b6Seschrock 286ea8dc4b6Seschrock return (ret); 287ea8dc4b6Seschrock } 288ea8dc4b6Seschrock 289ea8dc4b6Seschrock /* 290ea8dc4b6Seschrock * Called when a scrub completes. This simply set a bit which tells which AVL 291ea8dc4b6Seschrock * tree to add new errors. spa_errlog_sync() is responsible for actually 292ea8dc4b6Seschrock * syncing the changes to the underlying objects. 293ea8dc4b6Seschrock */ 294ea8dc4b6Seschrock void 295ea8dc4b6Seschrock spa_errlog_rotate(spa_t *spa) 296ea8dc4b6Seschrock { 297ea8dc4b6Seschrock mutex_enter(&spa->spa_errlist_lock); 298ea8dc4b6Seschrock spa->spa_scrub_finished = B_TRUE; 299ea8dc4b6Seschrock mutex_exit(&spa->spa_errlist_lock); 300ea8dc4b6Seschrock } 301ea8dc4b6Seschrock 302ea8dc4b6Seschrock /* 303ea8dc4b6Seschrock * Discard any pending errors from the spa_t. Called when unloading a faulted 304ea8dc4b6Seschrock * pool, as the errors encountered during the open cannot be synced to disk. 305ea8dc4b6Seschrock */ 306ea8dc4b6Seschrock void 307ea8dc4b6Seschrock spa_errlog_drain(spa_t *spa) 308ea8dc4b6Seschrock { 309ea8dc4b6Seschrock spa_error_entry_t *se; 310ea8dc4b6Seschrock void *cookie; 311ea8dc4b6Seschrock 312ea8dc4b6Seschrock mutex_enter(&spa->spa_errlist_lock); 313ea8dc4b6Seschrock 314ea8dc4b6Seschrock cookie = NULL; 315ea8dc4b6Seschrock while ((se = avl_destroy_nodes(&spa->spa_errlist_last, 316ea8dc4b6Seschrock &cookie)) != NULL) 317ea8dc4b6Seschrock kmem_free(se, sizeof (spa_error_entry_t)); 318ea8dc4b6Seschrock cookie = NULL; 319ea8dc4b6Seschrock while ((se = avl_destroy_nodes(&spa->spa_errlist_scrub, 320ea8dc4b6Seschrock &cookie)) != NULL) 321ea8dc4b6Seschrock kmem_free(se, sizeof (spa_error_entry_t)); 322ea8dc4b6Seschrock 323ea8dc4b6Seschrock mutex_exit(&spa->spa_errlist_lock); 324ea8dc4b6Seschrock } 325ea8dc4b6Seschrock 326ea8dc4b6Seschrock /* 327ea8dc4b6Seschrock * Process a list of errors into the current on-disk log. 328ea8dc4b6Seschrock */ 329ea8dc4b6Seschrock static void 330ea8dc4b6Seschrock sync_error_list(spa_t *spa, avl_tree_t *t, uint64_t *obj, dmu_tx_t *tx) 331ea8dc4b6Seschrock { 332ea8dc4b6Seschrock spa_error_entry_t *se; 333ea8dc4b6Seschrock char buf[64]; 334ea8dc4b6Seschrock void *cookie; 335ea8dc4b6Seschrock 336ea8dc4b6Seschrock if (avl_numnodes(t) != 0) { 337ea8dc4b6Seschrock /* create log if necessary */ 338ea8dc4b6Seschrock if (*obj == 0) 339ea8dc4b6Seschrock *obj = zap_create(spa->spa_meta_objset, 340ea8dc4b6Seschrock DMU_OT_ERROR_LOG, DMU_OT_NONE, 341ea8dc4b6Seschrock 0, tx); 342ea8dc4b6Seschrock 343ea8dc4b6Seschrock /* add errors to the current log */ 344ea8dc4b6Seschrock for (se = avl_first(t); se != NULL; se = AVL_NEXT(t, se)) { 345ea8dc4b6Seschrock char *name = se->se_name ? se->se_name : ""; 346ea8dc4b6Seschrock 347ea8dc4b6Seschrock bookmark_to_name(&se->se_bookmark, buf, sizeof (buf)); 348ea8dc4b6Seschrock 349ea8dc4b6Seschrock (void) zap_update(spa->spa_meta_objset, 350ea8dc4b6Seschrock *obj, buf, 1, strlen(name) + 1, name, tx); 351ea8dc4b6Seschrock } 352ea8dc4b6Seschrock 353ea8dc4b6Seschrock /* purge the error list */ 354ea8dc4b6Seschrock cookie = NULL; 355ea8dc4b6Seschrock while ((se = avl_destroy_nodes(t, &cookie)) != NULL) 356ea8dc4b6Seschrock kmem_free(se, sizeof (spa_error_entry_t)); 357ea8dc4b6Seschrock } 358ea8dc4b6Seschrock } 359ea8dc4b6Seschrock 360ea8dc4b6Seschrock /* 361ea8dc4b6Seschrock * Sync the error log out to disk. This is a little tricky because the act of 362ea8dc4b6Seschrock * writing the error log requires the spa_errlist_lock. So, we need to lock the 363ea8dc4b6Seschrock * error lists, take a copy of the lists, and then reinitialize them. Then, we 364ea8dc4b6Seschrock * drop the error list lock and take the error log lock, at which point we 365ea8dc4b6Seschrock * do the errlog processing. Then, if we encounter an I/O error during this 366ea8dc4b6Seschrock * process, we can successfully add the error to the list. Note that this will 367ea8dc4b6Seschrock * result in the perpetual recycling of errors, but it is an unlikely situation 368ea8dc4b6Seschrock * and not a performance critical operation. 369ea8dc4b6Seschrock */ 370ea8dc4b6Seschrock void 371ea8dc4b6Seschrock spa_errlog_sync(spa_t *spa, uint64_t txg) 372ea8dc4b6Seschrock { 373ea8dc4b6Seschrock dmu_tx_t *tx; 374ea8dc4b6Seschrock avl_tree_t scrub, last; 375ea8dc4b6Seschrock int scrub_finished; 376ea8dc4b6Seschrock 377ea8dc4b6Seschrock mutex_enter(&spa->spa_errlist_lock); 378ea8dc4b6Seschrock 379ea8dc4b6Seschrock /* 380ea8dc4b6Seschrock * Bail out early under normal circumstances. 381ea8dc4b6Seschrock */ 382ea8dc4b6Seschrock if (avl_numnodes(&spa->spa_errlist_scrub) == 0 && 383ea8dc4b6Seschrock avl_numnodes(&spa->spa_errlist_last) == 0 && 384ea8dc4b6Seschrock !spa->spa_scrub_finished) { 385ea8dc4b6Seschrock mutex_exit(&spa->spa_errlist_lock); 386ea8dc4b6Seschrock return; 387ea8dc4b6Seschrock } 388ea8dc4b6Seschrock 389ea8dc4b6Seschrock spa_get_errlists(spa, &last, &scrub); 390ea8dc4b6Seschrock scrub_finished = spa->spa_scrub_finished; 391ea8dc4b6Seschrock spa->spa_scrub_finished = B_FALSE; 392ea8dc4b6Seschrock 393ea8dc4b6Seschrock mutex_exit(&spa->spa_errlist_lock); 394ea8dc4b6Seschrock mutex_enter(&spa->spa_errlog_lock); 395ea8dc4b6Seschrock 396ea8dc4b6Seschrock tx = dmu_tx_create_assigned(spa->spa_dsl_pool, txg); 397ea8dc4b6Seschrock 398ea8dc4b6Seschrock /* 399ea8dc4b6Seschrock * Sync out the current list of errors. 400ea8dc4b6Seschrock */ 401ea8dc4b6Seschrock sync_error_list(spa, &last, &spa->spa_errlog_last, tx); 402ea8dc4b6Seschrock 403ea8dc4b6Seschrock /* 404ea8dc4b6Seschrock * Rotate the log if necessary. 405ea8dc4b6Seschrock */ 406ea8dc4b6Seschrock if (scrub_finished) { 407ea8dc4b6Seschrock if (spa->spa_errlog_last != 0) 408ea8dc4b6Seschrock VERIFY(dmu_object_free(spa->spa_meta_objset, 409ea8dc4b6Seschrock spa->spa_errlog_last, tx) == 0); 410ea8dc4b6Seschrock spa->spa_errlog_last = spa->spa_errlog_scrub; 411ea8dc4b6Seschrock spa->spa_errlog_scrub = 0; 412ea8dc4b6Seschrock 413ea8dc4b6Seschrock sync_error_list(spa, &scrub, &spa->spa_errlog_last, tx); 414ea8dc4b6Seschrock } 415ea8dc4b6Seschrock 416ea8dc4b6Seschrock /* 417ea8dc4b6Seschrock * Sync out any pending scrub errors. 418ea8dc4b6Seschrock */ 419ea8dc4b6Seschrock sync_error_list(spa, &scrub, &spa->spa_errlog_scrub, tx); 420ea8dc4b6Seschrock 421ea8dc4b6Seschrock /* 422ea8dc4b6Seschrock * Update the MOS to reflect the new values. 423ea8dc4b6Seschrock */ 424ea8dc4b6Seschrock (void) zap_update(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT, 425ea8dc4b6Seschrock DMU_POOL_ERRLOG_LAST, sizeof (uint64_t), 1, 426ea8dc4b6Seschrock &spa->spa_errlog_last, tx); 427ea8dc4b6Seschrock (void) zap_update(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT, 428ea8dc4b6Seschrock DMU_POOL_ERRLOG_SCRUB, sizeof (uint64_t), 1, 429ea8dc4b6Seschrock &spa->spa_errlog_scrub, tx); 430ea8dc4b6Seschrock 431ea8dc4b6Seschrock dmu_tx_commit(tx); 432ea8dc4b6Seschrock 433ea8dc4b6Seschrock mutex_exit(&spa->spa_errlog_lock); 434ea8dc4b6Seschrock } 435